EP0221809A1 - Hybrid circuit and method for producing such a circuit - Google Patents

Hybrid circuit and method for producing such a circuit Download PDF

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Publication number
EP0221809A1
EP0221809A1 EP86402284A EP86402284A EP0221809A1 EP 0221809 A1 EP0221809 A1 EP 0221809A1 EP 86402284 A EP86402284 A EP 86402284A EP 86402284 A EP86402284 A EP 86402284A EP 0221809 A1 EP0221809 A1 EP 0221809A1
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EP
European Patent Office
Prior art keywords
rods
substrate
components
substrates
wires
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86402284A
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German (de)
French (fr)
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EP0221809B1 (en
Inventor
Michel Dubois
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Thales SA
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Thomson CSF SA
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Publication of EP0221809B1 publication Critical patent/EP0221809B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
    • H01L23/538—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames the interconnection structure between a plurality of semiconductor chips being formed on, or in, insulating substrates
    • H01L23/5382—Adaptable interconnections, e.g. for engineering changes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/16—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits
    • H01L25/165—Containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/481—Disposition
    • H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/48225—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
    • H01L2224/48227—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation connecting the wire to a bond pad of the item
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/484—Connecting portions
    • H01L2224/4847—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a wedge bond
    • H01L2224/48472—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a wedge bond the other connecting portion not on the bonding area also being a wedge bond, i.e. wedge-to-wedge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
    • H01L2224/491—Disposition
    • H01L2224/4912—Layout
    • H01L2224/49171—Fan-out arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/19—Details of hybrid assemblies other than the semiconductor or other solid state devices to be connected
    • H01L2924/191—Disposition
    • H01L2924/19101—Disposition of discrete passive components
    • H01L2924/19107—Disposition of discrete passive components off-chip wires

Definitions

  • the present invention relates to a hybrid circuit and its manufacturing method.
  • a hybrid circuit has active and passive components, the active components being chips. These components are connected to each other by means of conductive tracks printed on an insulating substrate. These tracks are directly connected to the connection lugs of the inputs-outputs of the circuit.
  • connection tracks are no longer on the same plane but on several planes partially isolated from each other by layers of insulation.
  • the circuit is therefore presented in a multilayer form, the components being placed on the last layer of insulation and connected to the conductive tracks by the connection pads which emerge on the surface. A set of electrical connections between the different components are enclosed between the layers of insulation and are therefore inaccessible.
  • the present invention overcomes these drawbacks.
  • the hybrid circuit according to the invention is therefore constituted in such a way that it allows total accessibility to all levels of electrical connections between the different components, the manufacturing time being moreover significantly shortened since the implementation phases of the components and screen printing are removed.
  • the present invention relates to a hybrid circuit comprising a substrate on which are mechanically fixed, passive and / or active components, mainly characterized in that the components are interconnected by means of free conductive wires and electrically insulated.
  • the present invention also relates to a method of manufacturing a hybrid circuit, characterized in that it consists in perforating a substrate to pass electrical connections from one face to the other; connecting the inputs-outputs of each component to these connections by conductive wires and electrically connecting the components to each other by means of free conductive wires, electrically isolated from each other.
  • FIG. 1 shows a hybrid circuit according to the invention, seen in cross section.
  • Active and / or passive components 1, 2 are fixed mechanically, for example by bonding to a substrate 3. These components are generally chips (or chips) and resistive, capacitive or inductive elements.
  • the substrate consists, for example, of an alumina wafer.
  • the substrate 3 has perforations, that is to say holes 4 which pass right through and in which are placed conductive rods 5 which emerge on either side of the plate constituting this substrate.
  • the inputs-outputs of components 1, 2, these components all being arranged on the same face of the substrate, are electrically connected to the rods 5 by conductive wires 6.
  • the rods 5 emerge so as to allow the electrical connection between the different components, this connection is made by conductive wires 8 electrically insulated from each other.
  • the rods have the shape of a nail whose head rests on one face of the substrate 3 which also facilitates their maintenance.
  • the second substrate 7 is also provided with holes whose location coincides with the location of the holes placed on the substrate 3.
  • the rods 5 emerge under the substrate 7.
  • the various input-outputs of the components are electrically connected by the wires 6 to the rods 5 on one face of the substrate 3.
  • the rods 5 are connected to each other on the other face of the second substrate 7 by the wires 8, free, electrically insulated between them and placed below the substrate 7.
  • free wires accessible electrical connections which do not consist of tracks printed on a substrate and which are not enclosed between different layers of insulator.
  • the wires 8 connect the different rods in accordance with the circuit design plan so that this circuit can perform its function.
  • the inputs and outputs of the circuit are electrically connected to the external connection lugs 9.
  • This connection is made by free wires 8 which are connected on the underside of the substrate 7 to rods 5 which are located on the periphery of the substrate, c that is to say, close to the connection lugs 9.
  • Each rod 5 being connected to a lug 9, on the top face of the substrate 3 by a wire 6.
  • a metal frame is used to support the legs 9.
  • the legs are arranged over the entire periphery of the frame, or only on two opposite sides (FIG. 2) in accordance with the standards imposed for the housings.
  • the frame is closed above by a cover 11 and below by a cover 12, the terms above and below refer of course to the representation made in this figure.
  • connection lugs 9 are held in place and electrically insulated by a material consisting of glass beads 13.
  • FIG. 2 represents a top view of the circuit, the cover 11 having been removed.
  • the substrate 3 includes a set of holes arranged in a matrix fashion to facilitate automatic production, for example.
  • the components are fixed to the substrate and connected to the heads 14 of the rods 5.
  • Rods 5 are placed in a row running along each row of connection lugs 9.
  • FIG. 3 represents the bottom view of the circuit, the cover 12 having been removed.
  • the wires 8 electrically connect the different rods 5.
  • Figure 4 shows a partial view of the circuit, in section transverse, this view corresponding to an alternative embodiment.
  • the substrate 7 is fixed to the frame 10 by brazing instead of being glued, for example.
  • the substrate therefore includes a perimeter metallization 16.
  • the rods 5 can be fixed to the substrate also by soldering, for this the holes 5 are metallized.
  • the metallization appears under the reference 15. This means makes it possible to fix and maintain the rods 5 in the holes, the second support 3 which, according to the embodiment of FIG. 1, makes it possible to facilitate this fixing and this maintenance, is not no longer required according to this embodiment.
  • the method for producing the hybrid circuit according to the invention consists, in the case of the first embodiment corresponding to FIG. 1, of: - drilling the substrates 3 and 7 according to a matrix configuration by means of automatic devices facilitating serial production (for example a laser beam); - Assemble in a single operation the two substrates 3 and 7, as well as the rods 5 and the frame 10, this assembly is carried out by a preform adhesive in the form of a sheet placed between the two substrates and which after polymerization in temperature and pressure on the substrates, ensures the mechanical maintenance of the assembly; - Connect the rods 5 to each other, using insulated wires 8 of small diameter welded to the ends of these rods 5; mounting the components on the substrate 3 by bonding using a resin of the epoxy type; - connect the components to the rods 5 using the wires 6 according to conventional ultrasonic or thermosonic methods; - connect the rods 5 to the external connection lugs using the wires 6 according to the same methods as above; - weld the metal cover 11 (for example
  • the method for producing the hybrid circuit according to the invention consists, in the second embodiment shown in FIG. 4, of eliminating the steps of assembling the substrate, of the frame and of the rods by gluing and replacing them with a brazing method, the second substrate 3 being useless.
  • the components are bonded to the substrate 7 which is integral with the frame 10.
  • the closing of the circuit that is to say the fixing of the cover 12 and the cover 11 can be carried out by laser welding.
  • the hybrid circuit two exemplary embodiments of which have been given, facilitates access to the input-outputs of each component and to all the electrical connections of the circuit. This configuration facilitates testing during the production phase of a model or prototype and facilitates maintenance after serial production since all the connections between the various components are accessible.
  • This configuration also makes it possible to shorten manufacturing times since the traditional steps of implanting and depositing conductive and insulating layers are eliminated.

Abstract

Hybrid circuit and its method of production, in which the electrical connections between the various components (1, 2) are made underneath the substrate (3) on which they are located, with conducting wires (8) which are electrically insulated from one another. Application to microelectronics. <IMAGE>

Description

La présente invention concerne un circuit hybride et son procédé de fabrication.The present invention relates to a hybrid circuit and its manufacturing method.

Généralement un circuit hybride comporte des composants actifs et passifs, les composants actifs étant des chips (puces). Ces composants sont reliés les uns aux autres au moyen de pistes conductrices imprimées sur un substrat isolant. Ces pistes sont directement reliées aux pattes de connexions des entrées-sorties du circuit.Generally a hybrid circuit has active and passive components, the active components being chips. These components are connected to each other by means of conductive tracks printed on an insulating substrate. These tracks are directly connected to the connection lugs of the inputs-outputs of the circuit.

Or on est amené de plus en plus à intégrer des circuits sur un même substrat pour réaliser des fonctions plus complexes. Les liaisons électriques entre les différents composants sont par con­séquent plus nombreuses. Pour éviter d'avoir une trop grande com­plexité dans les liaisons on effectue une étude d'implantation qui permet d'aboutir à la réalisation des connexions sur différents plans.However, it is increasingly necessary to integrate circuits on the same substrate to perform more complex functions. The electrical connections between the various components are therefore more numerous. To avoid having too great a complexity in the connections, an implementation study is carried out which makes it possible to achieve connections on different planes.

En effet, les pistes de connexion ne sont plus sur un même plan mais sur plusieurs plans isolés partiellement entre eux par des couches d'isolant. Le circuit se présente donc sous une forme multicouche les composants étant placés sur la dernière couche d'isolant et reliés aux pistes conductrices par les plots de connexion qui émergent à la surface. Un ensemble de liaisons électriques entre les différents composants sont enfermées entre les couches d'isolant et sont par conséquent inaccessibles.Indeed, the connection tracks are no longer on the same plane but on several planes partially isolated from each other by layers of insulation. The circuit is therefore presented in a multilayer form, the components being placed on the last layer of insulation and connected to the conductive tracks by the connection pads which emerge on the surface. A set of electrical connections between the different components are enclosed between the layers of insulation and are therefore inaccessible.

Or, ces circuits étant complexes, il est nécessaire d'augmenter les tests sur les maquettes ou les prototypes sur tous les niveaux électriques, notamment aux entrées-sorties de chaque composant et sur chaque liaison électrique entre les différents composants. Par ailleurs, pour assurer une bonne maintenance après la fabrication série, il est également préférable d'accéder à tous ces niveaux.However, these circuits being complex, it is necessary to increase the tests on models or prototypes on all the electrical levels, in particular at the inputs-outputs of each component and on each electrical connection between the various components. In addition, to ensure good maintenance after serial production, it is also preferable to access all of these levels.

Un autre inconvénient réside dans le fait que la période qui s'écoule entre l'étude topologique du circuit et le montage-câblage et qui comprend en particulier les phases d'implantation et de sérigraphie, est très longue.Another disadvantage lies in the fact that the period which elapses between the topological study of the circuit and the assembly-wiring and which includes in particular the phases of installation and screen printing, is very long.

La présente invention permet de remédier à ces inconvénients. Le circuit hybride selon l'invention est pour cela constitué de manière à ce qu'il permette une totale accessibilité à tous les niveaux de connexions électriques entre les différents composants, la durée de fabrication étant par ailleurs nettement raccourcie puisque les phases d'implantation des composants et de sérigraphie sont supprimées.The present invention overcomes these drawbacks. The hybrid circuit according to the invention is therefore constituted in such a way that it allows total accessibility to all levels of electrical connections between the different components, the manufacturing time being moreover significantly shortened since the implementation phases of the components and screen printing are removed.

La présente invention a pour objet un circuit hybride com­portant un substrat sur lequel sont fixés mécaniquement, des com­posants passifs et/ou actifs, principalement caractérisé en ce que les composants sont reliés entre eux au moyen de fils conducteurs libres et isolés électriquement.The present invention relates to a hybrid circuit comprising a substrate on which are mechanically fixed, passive and / or active components, mainly characterized in that the components are interconnected by means of free conductive wires and electrically insulated.

La présente invention a également pour objet un procédé de fabrication d'un circuit hybride, caractérisé en ce qu'il consiste à perforer un substrat pour passer des connections électriques d'une face à l'autre ; à relier les entrées-sorties de chaque composant à ces connexions par des fils conducteurs et à relier électriquement les composants entre eux au moyen de fils conducteurs libres, isolés électriquement entre eux.The present invention also relates to a method of manufacturing a hybrid circuit, characterized in that it consists in perforating a substrate to pass electrical connections from one face to the other; connecting the inputs-outputs of each component to these connections by conductive wires and electrically connecting the components to each other by means of free conductive wires, electrically isolated from each other.

D'autres particularités et avantages de l'invention apparaîtront clairement à la lecture de la description suivante présentée à titre d'exemple non limitatif et faite en regard des figures annexées qui représentent :

  • - figure 1, une coupe transversale du circuit selon l'invention ;
  • - figures 2 et 3, une vue de dessus et de dessous du circuit selon l'invention ;
  • - figure 4, une vue partielle en coupe transversale d'une variante d'exécution du circuit selon l'invention.
Other features and advantages of the invention will appear clearly on reading the following description presented by way of nonlimiting example and made with reference to the appended figures which represent:
  • - Figure 1, a cross section of the circuit according to the invention;
  • - Figures 2 and 3, a top and bottom view of the circuit according to the invention;
  • - Figure 4, a partial cross-sectional view of an alternative embodiment of the circuit according to the invention.

Dans toute la description suivante, les mêmes références désignent les mêmes éléments.Throughout the following description, the same references designate the same elements.

On a représenté sur la figure 1 un circuit hybride selon l'invention, vu en coupe transversale.FIG. 1 shows a hybrid circuit according to the invention, seen in cross section.

Des composants 1, 2 (deux seulement sont représentés) actifs et/ou passifs sont fixés mécaniquement par exemple par collage sur un substrat 3. Ces composants sont généralement des chips (ou puces) et des éléments résistifs, capacitifs ou selfiques. Le substrat est constitué par exemple par une plaquette d'alumine. Le substrat 3 comporte des perforations c'est-à-dire des trous 4 qui traversent de part en part et dans lesquels, sont placées des tiges conductrices 5 qui émergent de part et d'autre de la plaquette constituant ce substrat. Les entrées-sorties des composants 1, 2, ces composants étant tous disposés sur une même face du substrat, sont reliées électriquement aux tiges 5 par des fils conducteurs 6. Sur l'autre face du substrat les tiges 5 émergent de manière à permettre le raccordement électrique entre les différents composants, ce raccor­dement est effectué par des fils conducteurs 8 isolés électriquement entre eux.Active and / or passive components 1, 2 (only two are shown) are fixed mechanically, for example by bonding to a substrate 3. These components are generally chips (or chips) and resistive, capacitive or inductive elements. The substrate consists, for example, of an alumina wafer. The substrate 3 has perforations, that is to say holes 4 which pass right through and in which are placed conductive rods 5 which emerge on either side of the plate constituting this substrate. The inputs-outputs of components 1, 2, these components all being arranged on the same face of the substrate, are electrically connected to the rods 5 by conductive wires 6. On the other face of the substrate the rods 5 emerge so as to allow the electrical connection between the different components, this connection is made by conductive wires 8 electrically insulated from each other.

Dans cet exemple de réalisation particulière on a utilisé deux substrats superposés, ce qui facilite la fixation et le maintien des tiges 5 dans les trous 4. En effet, en collant les deux substrats 3 et 7 et en effectuant une pression sur ces deux substrats, la colle remonte dans l'espace situé entre le logement que constitue chaque trou et les tiges qui y sont placées.In this particular embodiment, two superimposed substrates were used, which facilitates the fixing and the maintenance of the rods 5 in the holes 4. In fact, by bonding the two substrates 3 and 7 and applying pressure on these two substrates, the glue rises in the space between the housing that constitutes each hole and the rods placed there.

Les tiges ont la forme d'un clou dont la tête repose sur une face du substrat 3 ce qui facilite également leur maintien. Le deuxième substrat 7 est également pourvu de trous dont l'empla­cement coïncide avec l'emplacement des trous placés sur le substrat 3. Les tiges 5 émergent sous le substrat 7.The rods have the shape of a nail whose head rests on one face of the substrate 3 which also facilitates their maintenance. The second substrate 7 is also provided with holes whose location coincides with the location of the holes placed on the substrate 3. The rods 5 emerge under the substrate 7.

Les différentes entrées-sorties des composants sont reliées électriquement par les fils 6 aux tiges 5 sur une face du substrat 3. Les tiges 5 sont reliées entre elles sur l'autre face du deuxième substrat 7 par les fils 8, libres, isolés électriquement entre eux et placés au dessous du substrat 7.The various input-outputs of the components are electrically connected by the wires 6 to the rods 5 on one face of the substrate 3. The rods 5 are connected to each other on the other face of the second substrate 7 by the wires 8, free, electrically insulated between them and placed below the substrate 7.

On entend par fils libres, des liaisons électriques accessibles qui ne sont pas constituées de pistes imprimées sur un substrat et qui ne sont pas enfermées entre différentes couches d'isolant.By free wires is meant accessible electrical connections which do not consist of tracks printed on a substrate and which are not enclosed between different layers of insulator.

Les fils 8 relient les différentes tiges conformément au plan de conception du circuit pour que ce circuit puisse assurer sa fonction.The wires 8 connect the different rods in accordance with the circuit design plan so that this circuit can perform its function.

Les entrées et sorties du circuit sont reliées électriquement aux pattes de connexion externes 9. Cette liaison est réalisée par des fils libres 8 qui sont connectés sur la face de dessous du substrat 7 à des tiges 5 qui sont situées sur la périphérie du substrat, c'est-à-­dire, proche des pattes de connexion 9. Chaque tige 5 étant con­nectée à une patte 9, sur la face du dessus du substrat 3 par un fil 6.The inputs and outputs of the circuit are electrically connected to the external connection lugs 9. This connection is made by free wires 8 which are connected on the underside of the substrate 7 to rods 5 which are located on the periphery of the substrate, c that is to say, close to the connection lugs 9. Each rod 5 being connected to a lug 9, on the top face of the substrate 3 by a wire 6.

Un cadre métallique sert de support aux pattes 9. Les pattes sont disposées sur toute la périphérie du cadre, ou seulement sur deux côtés opposés (figure 2) conformément aux normes imposées pour les boîtiers. Le cadre est fermé au dessus par un couvercle 11 et au dessous par un capot 12, les termes de dessus et de dessous se réfèrent bien entendu à la représentation faite sur cette figure.A metal frame is used to support the legs 9. The legs are arranged over the entire periphery of the frame, or only on two opposite sides (FIG. 2) in accordance with the standards imposed for the housings. The frame is closed above by a cover 11 and below by a cover 12, the terms above and below refer of course to the representation made in this figure.

Les pattes de connexion 9 sont maintenues en place et isolées électriquement par un matériau constitué de perles de verre 13.The connection lugs 9 are held in place and electrically insulated by a material consisting of glass beads 13.

La figure 2 représente une vue de dessus du circuit, le couvercle 11 ayant été retiré. Le substrat 3 comporte un ensemble de trous disposés de manière matricielle pour faciliter la réalisation automatique par exemple. Les composants sont fixés sur le substrat et connectés aux têtes 14 des tiges 5. Des tiges 5 sont placées sur une rangée longeant chaque rangée de pattes de connexion 9.FIG. 2 represents a top view of the circuit, the cover 11 having been removed. The substrate 3 includes a set of holes arranged in a matrix fashion to facilitate automatic production, for example. The components are fixed to the substrate and connected to the heads 14 of the rods 5. Rods 5 are placed in a row running along each row of connection lugs 9.

La figure 3 représente la vue de dessous du circuit, le capot 12 ayant été retiré. Les fils 8 relient électriquement les différentes tiges 5.FIG. 3 represents the bottom view of the circuit, the cover 12 having been removed. The wires 8 electrically connect the different rods 5.

La figure 4, représente une vue partielle du circuit, en coupe transversale, cette vue correspondant à une variante d'exécution. Le substrat 7 est fixé au cadre 10 par brasage au lieu d'être collé par exemple. Le substrat comporte pour cela une métallisation périmé­trique 16. Par ailleurs les tiges 5 peuvent être fixées au substrat également par brasage, pour cela les trous 5 sont métallisés. La métallisation apparaît sous la référence 15. Ce moyen permet de fixer et de maintenir les tiges 5 dans les trous, le deuxième support 3 qui selon l'exemple de réalisation de la figure 1 permet de faciliter cette fixation et ce maintien, n'est plus nécessaire selon ce mode de réalisation.Figure 4 shows a partial view of the circuit, in section transverse, this view corresponding to an alternative embodiment. The substrate 7 is fixed to the frame 10 by brazing instead of being glued, for example. The substrate therefore includes a perimeter metallization 16. Furthermore, the rods 5 can be fixed to the substrate also by soldering, for this the holes 5 are metallized. The metallization appears under the reference 15. This means makes it possible to fix and maintain the rods 5 in the holes, the second support 3 which, according to the embodiment of FIG. 1, makes it possible to facilitate this fixing and this maintenance, is not no longer required according to this embodiment.

Le procédé de réalisation du circuit hybride selon l'invention consiste dans le cas du premier mode de réalisation correspondant à la figure 1, à :
- percer les substrats 3 et 7 selon une configuration matricielle au moyen de dispositifs automatiques facilitant la fabrication série (par exemple un faisceau laser) ;
- assembler en une seule opération les deux substrats 3 et 7, ainsi que les tiges 5 et le cadre 10, cet assemblage est réalisé par une colle en préforme se présentant sous la forme d'une feuille disposée entre les deux substrats et qui après polymérisation en température et pression sur les substrats, assure le maintien mécanique de l'ensemble ;
- raccorder les tiges 5 entre elles, à l'aide de fils isolés 8 de faible diamètre soudés sur les extrémités de ces tiges 5 ;
monter les composants sur le substrat 3 par collage à l'aide d'une résine du type époxyde ;
- raccorder les composants aux tiges 5 à l'aide des fils 6 selon les méthodes classiques ultrasoniques ou thermosoniques ;
- raccorder les tiges 5 aux pattes de connexions externes à l'aide des fils 6 selon les mêmes méthodes que précédemment ;
- souder le couvercle métallique 11 (par exemple en ferro-nickel) sur le cadre 10 par un procédé traditionnel de soudure électrique à la molette, sous atmosphère neutre, afin d'assurer l'herméticité de la cavité supérieure comportant les composants ;
- fixer le capot 12 par collage afin d'assurer l'étanchéité de la cavité inférieure.The method for producing the hybrid circuit according to the invention consists, in the case of the first embodiment corresponding to FIG. 1, of:
- drilling the substrates 3 and 7 according to a matrix configuration by means of automatic devices facilitating serial production (for example a laser beam);
- Assemble in a single operation the two substrates 3 and 7, as well as the rods 5 and the frame 10, this assembly is carried out by a preform adhesive in the form of a sheet placed between the two substrates and which after polymerization in temperature and pressure on the substrates, ensures the mechanical maintenance of the assembly;
- Connect the rods 5 to each other, using insulated wires 8 of small diameter welded to the ends of these rods 5;
mounting the components on the substrate 3 by bonding using a resin of the epoxy type;
- connect the components to the rods 5 using the wires 6 according to conventional ultrasonic or thermosonic methods;
- connect the rods 5 to the external connection lugs using the wires 6 according to the same methods as above;
- weld the metal cover 11 (for example made of ferro-nickel) to the frame 10 by a traditional method of electric soldering with a thumb wheel, in a neutral atmosphere, in order to ensure the hermeticity of the upper cavity comprising the components;
- Fix the cover 12 by gluing to ensure the tightness of the lower cavity.

Le procédé de réalisation du circuit hybride selon l'invention consiste dans le deuxième mode de réalisation représenté sur la figure 4 à supprimer les étapes d'assemblage de substrat, du cadre et des tiges par collage et à les remplacer par une méthode de brasage, le deuxième substrat 3 étant inutile. Les composants sont collés sur le substrat 7 qui est solidaire du cadre 10.The method for producing the hybrid circuit according to the invention consists, in the second embodiment shown in FIG. 4, of eliminating the steps of assembling the substrate, of the frame and of the rods by gluing and replacing them with a brazing method, the second substrate 3 being useless. The components are bonded to the substrate 7 which is integral with the frame 10.

La fermeture du circuit, c'est-à-dire la fixation du capot 12 et du couvercle 11 peut être réalisée par une soudure laser.The closing of the circuit, that is to say the fixing of the cover 12 and the cover 11 can be carried out by laser welding.

Les figures représentées concernent une configuration de boîtier du type Flat pack, bien entendu, l'invention s'applique à toute autre configuration notamment aux boîtiers du type dual-in-line.The figures shown relate to a flat pack type housing configuration, of course, the invention applies to any other configuration, in particular to housings of the dual-in-line type.

Le circuit hybride dont deux exemples de réalisation ont été donnés permet de faciliter l'accès aux entrées-sorties de chaque composant et à toutes les liaisons électriques du circuit. Cette configuration permet de faciliter les tests pendant la phase de réalisation d'une maquette ou d'un prototype et de faciliter la maintenance après la fabrication série puisque toutes les connexions entre les divers composants sont accessibles.The hybrid circuit, two exemplary embodiments of which have been given, facilitates access to the input-outputs of each component and to all the electrical connections of the circuit. This configuration facilitates testing during the production phase of a model or prototype and facilitates maintenance after serial production since all the connections between the various components are accessible.

Cette configuration permet en plus de raccourcir des délais de fabrication puisque les étapes traditionnelles d'implantation et de dépôt de couches conductrices et isolantes sont supprimées.This configuration also makes it possible to shorten manufacturing times since the traditional steps of implanting and depositing conductive and insulating layers are eliminated.

Claims (7)

1. Circuit hybride comportant un substrat (3) sur lequel sont fixés mécaniquement des composants passifs et/ou actifs, les composants (1, 2) étant reliés entre eux au moyen de fils con­ducteurs (8) libres et isolés électriquement, caractérisé en ce que le circuit comporte un deuxième substrat (7) plaqué contre le premier et solidaire de ce dernier, les substrats étant traversés par des tiges conductrices (5) assurant les liaisons électriques entre les entrées­sorties des composants et les fils conducteurs placés sous le deuxième substrat.1. Hybrid circuit comprising a substrate (3) on which passive and / or active components are mechanically fixed, the components (1, 2) being interconnected by means of free and electrically insulated conducting wires (8), characterized in that that the circuit comprises a second substrate (7) pressed against the first and integral with the latter, the substrates being traversed by conductive rods (5) ensuring the electrical connections between the inputs of the components and the conductive wires placed under the second substrate. 2. Circuit selon la revendication 1, caractérisé en ce que les substrats comportent des perforations (4) sur leur périphérie dans lesquelles sont logées des tiges conductrices (5) pour effectuer des liaisons électriques entre une face du substrat et l'autre face de manière à relier les fils isolés (8) à ces tiges (5), les tiges étant reliées aux pattes (9) de sortie du circuit hybride au moyen de fils conducteurs (6).2. Circuit according to claim 1, characterized in that the substrates have perforations (4) on their periphery in which are housed conductive rods (5) to make electrical connections between one side of the substrate and the other side so in connecting the insulated wires (8) to these rods (5), the rods being connected to the tabs (9) of the output of the hybrid circuit by means of conductive wires (6). 3. Circuit selon la revendication 1, caractérisé en ce que le deuxième substrat (7) est collé au premier substrat (3), le collage des deux substrats assurant la fixation des tiges conductrices (5) qui traversent les deux substrats.3. Circuit according to claim 1, characterized in that the second substrate (7) is bonded to the first substrate (3), the bonding of the two substrates ensuring the attachment of the conductive rods (5) which pass through the two substrates. 4. Circuit selon l'une quelconque des revendication 1 à 3, caractérisé en ce que les fils isolés (8) sont soudés par leurs extrémités aux extrémités des tiges qui émergent de la face opposée à la face du substrat qui est en contact avec les composants.4. Circuit according to any one of claims 1 to 3, characterized in that the insulated wires (8) are soldered by their ends to the ends of the rods which emerge from the face opposite to the face of the substrate which is in contact with the components. 5. Circuit selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le circuit comporte un cadre (10) porteur des pattes de connexion (9) externes disposé autour du substrat (7) et solidaire de celui-ci ; un couvercle (11) placé au-dessus du cadre et solidaire de celui-ci, un capot (12) placé au dessous du cadre et solidaire de celui-ci.5. Circuit according to any one of claims 1 to 4, characterized in that the circuit comprises a frame (10) carrying the connection tabs (9) external disposed around the substrate (7) and integral therewith; a cover (11) placed above the frame and integral with the latter, a cover (12) placed below the frame and integral with the latter. 6. Procédé de fabrication d'un circuit hybride, caractérisé en ce qu'il consiste à perforer deux substrats pour passer des tiges conductricces (5) assurant des liaisons électriques d'une face à l'autre ; à relier les entrées-sorties de chaque composant à ces connexions par des fils conducteurs (6) et à relier électriquement les composants entre eux au moyen de fils conducteurs (8) libres, isolés électriquement entre eux.6. A method of manufacturing a hybrid circuit, characterized in that it consists in perforating two substrates to pass conductive rods (5) ensuring electrical connections from one face to the other; in connecting the inputs-outputs of each component to these connections by conductive wires (6) and in electrically connecting the components to each other by means of free conductive wires (8), electrically isolated from each other. 7. Procédé de fabrication d'un circuit hybride selon la reven­dication 6, caractérisé en ce qu'il consiste à :
- percer les substrats (3 et 7) selon une configuration matricielle ;
- assembler en une seule opération les deux substrats (3 et 7), ainsi que les tiges (5) et un cadre (10) porteur des pattes de connexions externes (9), cet assemblage étant réalisé par une colle en préforme se présentant sous la forme d'une feuille disposée entre les deux substrats et qui après polymérisation en température et pression sur les substrats, assure le maintien mécanique de l'ensemble ;
- raccorder les tiges (5) entre elles, à l'aide de fils isolés (8) de faible diamètre soudés sur les extrémités de ces tiges 5 ;
- monter les composants sur le substrat (3) par collage à l'aide d'une résine du type époxyde ;
- raccorder les composants aux tiges (5) à l'aide des fils (6) selon les méthodes ultrasoniques ou thermosoniques ;
raccorder les tiges (5) aux pattes de connexions externes à l'aide des fils (6) selon les mêmes méthodes que précédemment ;
- souder un couvercle métallique (11) sur le cadre (10) par un procédé de soudure électrique à la molette, sous atmosphère neutre, afin d'assurer l'herméticité de la cavité supérieure comportant les composants ;
- fixer le capot 12 par collage afin d'assurer l'étanchéité de la cavité inférieure.7. Method for manufacturing a hybrid circuit according to claim 6, characterized in that it consists in:
- drilling the substrates (3 and 7) according to a matrix configuration;
- Assemble in a single operation the two substrates (3 and 7), as well as the rods (5) and a frame (10) carrying the external connection lugs (9), this assembly being carried out by a preform glue having under the form of a sheet placed between the two substrates and which, after temperature and pressure polymerization on the substrates, ensures the mechanical maintenance of the assembly;
- connect the rods (5) to each other, using insulated wires (8) of small diameter welded to the ends of these rods 5;
- Mount the components on the substrate (3) by bonding using a resin of the epoxy type;
- connect the components to the rods (5) using the wires (6) using ultrasonic or thermosonic methods;
connect the rods (5) to the external connection lugs using the wires (6) according to the same methods as above;
- weld a metal cover (11) on the frame (10) by an electric soldering process using a thumb wheel, in a neutral atmosphere, in order to ensure the hermeticity of the upper cavity containing the components;
- Fix the cover 12 by gluing to ensure the tightness of the lower cavity.
EP86402284A 1985-10-16 1986-10-14 Hybrid circuit and method for producing such a circuit Expired - Lifetime EP0221809B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8515308 1985-10-16
FR8515308A FR2588696B1 (en) 1985-10-16 1985-10-16 HYBRID CIRCUIT AND METHOD FOR MANUFACTURING SUCH A CIRCUIT

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EP0221809A1 true EP0221809A1 (en) 1987-05-13
EP0221809B1 EP0221809B1 (en) 1991-01-23

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EP86402284A Expired - Lifetime EP0221809B1 (en) 1985-10-16 1986-10-14 Hybrid circuit and method for producing such a circuit

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EP (1) EP0221809B1 (en)
DE (1) DE3677139D1 (en)
FR (1) FR2588696B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991005370A1 (en) * 1989-09-27 1991-04-18 Gec-Marconi Electronic Systems Corp. Hybrid module electronics package
WO1992003031A1 (en) * 1990-08-03 1992-02-20 Matra Marconi Space (Uk) Limited Packaging for hybrid circuits
USRE34291E (en) * 1989-09-27 1993-06-22 Gec-Marconi Electronic Systems Corp. Hybrid module electronics package
GB2262660A (en) * 1991-12-20 1993-06-23 Int Computers Ltd Power distribution arrangement
EP0630050A1 (en) * 1993-06-16 1994-12-21 Gec-Marconi Electronic Systems Corporation Low profile header assembly for an encapsulated instrument

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH446463A (en) * 1964-12-01 1967-11-15 Photocircuits Corp Process for the production of electrical components and electrical component produced by the process
FR2507409A1 (en) * 1981-06-03 1982-12-10 Radiotechnique Compelec Optimised microwave FET amplifier - has several passive microstrip components on alumina plate connected to FET electrodes through plated holes
EP0128799A1 (en) * 1983-06-03 1984-12-19 Thomson-Csf Method of producing a hybrid circuit, and hybrid circuit obtained by this method
WO1985001390A1 (en) * 1983-09-15 1985-03-28 Mosaic Systems, Inc. Wafer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH446463A (en) * 1964-12-01 1967-11-15 Photocircuits Corp Process for the production of electrical components and electrical component produced by the process
FR2507409A1 (en) * 1981-06-03 1982-12-10 Radiotechnique Compelec Optimised microwave FET amplifier - has several passive microstrip components on alumina plate connected to FET electrodes through plated holes
EP0128799A1 (en) * 1983-06-03 1984-12-19 Thomson-Csf Method of producing a hybrid circuit, and hybrid circuit obtained by this method
WO1985001390A1 (en) * 1983-09-15 1985-03-28 Mosaic Systems, Inc. Wafer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991005370A1 (en) * 1989-09-27 1991-04-18 Gec-Marconi Electronic Systems Corp. Hybrid module electronics package
AU629711B2 (en) * 1989-09-27 1992-10-08 Gec-Marconi Electronic Systems Corporation Hybrid module electronics package
USRE34291E (en) * 1989-09-27 1993-06-22 Gec-Marconi Electronic Systems Corp. Hybrid module electronics package
WO1992003031A1 (en) * 1990-08-03 1992-02-20 Matra Marconi Space (Uk) Limited Packaging for hybrid circuits
GB2262660A (en) * 1991-12-20 1993-06-23 Int Computers Ltd Power distribution arrangement
GB2262660B (en) * 1991-12-20 1995-03-29 Int Computers Ltd Power distribution arrangement
EP0630050A1 (en) * 1993-06-16 1994-12-21 Gec-Marconi Electronic Systems Corporation Low profile header assembly for an encapsulated instrument

Also Published As

Publication number Publication date
DE3677139D1 (en) 1991-02-28
FR2588696B1 (en) 1988-10-07
EP0221809B1 (en) 1991-01-23
FR2588696A1 (en) 1987-04-17

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